Merge bash_completions changes from upstream

The current bash_completion contrib code in openzfs is very old, and
some changes have been added since.

The original repo is at https://github.com/Aneurin/zfs-bash

I've been using the original @Aneurin code since my first deploy of ZoL.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: João Carlos Mendes Luís <jonny@jonny.eng.br>
Closes #10456
This commit is contained in:
Joao Carlos Mendes Luis 2020-06-16 16:27:23 -03:00 committed by GitHub
parent cd07d7c83f
commit fccaea454c
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@ -1,4 +1,4 @@
# Copyright (c) 2013, Aneurin Price <aneurin.price@gmail.com>
# Copyright (c) 2010-2016, Aneurin Price <aneurin.price@gmail.com>
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation
@ -29,6 +29,12 @@ else
__ZPOOL_CMD="sudo zpool"
fi
# Disable bash's built-in hostname completion, as this makes it impossible to
# provide completions containing an @-sign, which is necessary for completing
# snapshot names. If bash_completion is in use, this will already be disabled
# and replaced with better completions anyway.
shopt -u hostcomplete
__zfs_get_commands()
{
$__ZFS_CMD 2>&1 | awk '/^\t[a-z]/ {print $1}' | cut -f1 -d '|' | uniq
@ -51,12 +57,12 @@ __zfs_get_inheritable_properties()
__zfs_list_datasets()
{
$__ZFS_CMD list -H -o name -t filesystem,volume
$__ZFS_CMD list -H -o name -s name -t filesystem,volume "$@"
}
__zfs_list_filesystems()
{
$__ZFS_CMD list -H -o name -t filesystem
$__ZFS_CMD list -H -o name -s name -t filesystem
}
__zfs_match_snapshot()
@ -64,18 +70,59 @@ __zfs_match_snapshot()
local base_dataset=${cur%@*}
if [[ $base_dataset != $cur ]]
then
$__ZFS_CMD list -H -o name -t snapshot -d 1 $base_dataset
$__ZFS_CMD list -H -o name -s name -t snapshot -d 1 $base_dataset
else
$__ZFS_CMD list -H -o name -t filesystem,volume | awk '{print $1"@"}'
if [[ $cur != "" ]] && __zfs_list_datasets $cur &> /dev/null
then
$__ZFS_CMD list -H -o name -s name -t filesystem -r $cur | tail -n +2
# We output the base dataset name even though we might be
# completing a command that can only take a snapshot, because it
# prevents bash from considering the completion finished when it
# ends in the bare @.
echo $cur
echo $cur@
else
local datasets=$(__zfs_list_datasets)
# As above
echo $datasets
if [[ "$cur" == */ ]]
then
# If the current command ends with a slash, then the only way
# it can be completed with a single tab press (ie. in this pass)
# is if it has exactly one child, so that's the only time we
# need to offer a suggestion with an @ appended.
local num_children
# This is actually off by one as zfs list includes the named
# dataset in addition to its children
num_children=$(__zfs_list_datasets -d 1 ${cur%/} 2> /dev/null | wc -l)
if [[ $num_children != 2 ]]
then
return 0
fi
fi
echo "$datasets" | awk '{print $1"@"}'
fi
fi
}
__zfs_match_explicit_snapshot()
__zfs_match_snapshot_or_bookmark()
{
local base_dataset=${cur%@*}
local base_dataset=${cur%[#@]*}
if [[ $base_dataset != $cur ]]
then
$__ZFS_CMD list -H -o name -t snapshot -d 1 $base_dataset
if [[ $cur == *@* ]]
then
$__ZFS_CMD list -H -o name -s name -t snapshot -d 1 $base_dataset
else
$__ZFS_CMD list -H -o name -s name -t bookmark -d 1 $base_dataset
fi
else
$__ZFS_CMD list -H -o name -s name -t filesystem,volume
if [[ $cur != "" ]] && $__ZFS_CMD list -H -o name -s name -t filesystem,volume $cur &> /dev/null
then
echo $cur@
echo $cur#
fi
fi
}
@ -94,16 +141,16 @@ __zfs_match_multiple_snapshots()
return 1
fi
local range_start=$(expr "$cur" : '\(.*%\)')
$__ZFS_CMD list -H -o name -t snapshot -d 1 $base_dataset | sed 's$.*@$'$range_start'$g'
$__ZFS_CMD list -H -o name -s name -t snapshot -d 1 $base_dataset | sed 's$.*@$'$range_start'$g'
fi
else
__zfs_match_explicit_snapshot; __zfs_list_datasets
__zfs_match_snapshot_or_bookmark
fi
}
__zfs_list_volumes()
{
$__ZFS_CMD list -H -o name -t volume
$__ZFS_CMD list -H -o name -s name -t volume
}
__zfs_argument_chosen()
@ -114,13 +161,13 @@ __zfs_argument_chosen()
local prev="${COMP_WORDS[$word]}"
if [[ ${COMP_WORDS[$word-1]} != -[tos] ]]
then
if [[ "$prev" == [^,]*,* ]] || [[ "$prev" == *[@:]* ]]
if [[ "$prev" == [^,]*,* ]] || [[ "$prev" == *[@:\#]* ]]
then
return 0
fi
for property in $@
do
if [[ $prev == "$property" ]]
if [[ $prev == "$property"* ]]
then
return 0
fi
@ -169,12 +216,28 @@ __zfs_complete_switch()
fi
}
__zfs_complete_nospace()
{
# Google indicates that there may still be bash versions out there that
# don't have compopt.
if type compopt &> /dev/null
then
compopt -o nospace
fi
}
__zfs_complete()
{
local cur prev cmd cmds
COMPREPLY=()
if type _get_comp_words_by_ref &> /dev/null
then
# Don't split on colon
_get_comp_words_by_ref -n : -c cur -p prev -w COMP_WORDS -i COMP_CWORD
else
cur="${COMP_WORDS[COMP_CWORD]}"
prev="${COMP_WORDS[COMP_CWORD-1]}"
fi
cmd="${COMP_WORDS[1]}"
if [[ ${prev##*/} == zfs ]]
@ -185,10 +248,19 @@ __zfs_complete()
fi
case "${cmd}" in
bookmark)
if __zfs_argument_chosen
then
COMPREPLY=($(compgen -W "${prev%@*}# ${prev/@/#}" -- "$cur"))
else
COMPREPLY=($(compgen -W "$(__zfs_match_snapshot)" -- "$cur"))
fi
;;
clone)
case "${prev}" in
-o)
COMPREPLY=($(compgen -W "$(__zfs_get_editable_properties)" -- "$cur"))
__zfs_complete_nospace
;;
*)
if ! __zfs_complete_switch "o,p"
@ -222,7 +294,7 @@ __zfs_complete()
then
if __zfs_argument_chosen $(__zfs_get_properties)
then
COMPREPLY=($(compgen -W "$(__zfs_match_explicit_snapshot) $(__zfs_list_datasets)" -- "$cur"))
COMPREPLY=($(compgen -W "$(__zfs_match_snapshot)" -- "$cur"))
else
__zfs_complete_multiple_options "$(__zfs_get_properties)" "$cur"
fi
@ -233,7 +305,7 @@ __zfs_complete()
inherit)
if ! __zfs_complete_switch "r"
then
__zfs_complete_ordered_arguments "$(__zfs_get_inheritable_properties)" "$(__zfs_match_explicit_snapshot) $(__zfs_list_datasets)" $cur
__zfs_complete_ordered_arguments "$(__zfs_get_inheritable_properties)" "$(__zfs_match_snapshot)" $cur
fi
;;
list)
@ -253,7 +325,7 @@ __zfs_complete()
*)
if ! __zfs_complete_switch "H,r,d,o,t,s,S"
then
COMPREPLY=($(compgen -W "$(__zfs_match_explicit_snapshot) $(__zfs_list_datasets)" -- "$cur"))
COMPREPLY=($(compgen -W "$(__zfs_match_snapshot)" -- "$cur"))
fi
;;
esac
@ -268,26 +340,39 @@ __zfs_complete()
fi
;;
send)
if ! __zfs_complete_switch "d,n,P,p,R,v,i,I"
if ! __zfs_complete_switch "D,n,P,p,R,v,e,L,i,I"
then
if __zfs_argument_chosen
then
COMPREPLY=($(compgen -W "$(__zfs_match_snapshot)" -- "$cur"))
else
if [[ $prev == -*i* ]]
then
COMPREPLY=($(compgen -W "$(__zfs_match_snapshot_or_bookmark)" -- "$cur"))
else
COMPREPLY=($(compgen -W "$(__zfs_match_snapshot)" -- "$cur"))
fi
fi
fi
;;
snapshot)
case "${prev}" in
-o)
COMPREPLY=($(compgen -W "$(__zfs_get_editable_properties)" -- "$cur"))
__zfs_complete_nospace
;;
*)
if ! __zfs_complete_switch "o,r"
then
COMPREPLY=($(compgen -W "$(__zfs_list_datasets | awk '{print $1"@"}')" -- "$cur"))
COMPREPLY=($(compgen -W "$(__zfs_match_snapshot)" -- "$cur"))
__zfs_complete_nospace
fi
;;
esac
;;
set)
__zfs_complete_ordered_arguments "$(__zfs_get_editable_properties)" "$(__zfs_match_explicit_snapshot) $(__zfs_list_datasets)" $cur
__zfs_complete_ordered_arguments "$(__zfs_get_editable_properties)" "$(__zfs_match_snapshot)" $cur
__zfs_complete_nospace
;;
upgrade)
case "${prev}" in
@ -306,13 +391,17 @@ __zfs_complete()
if ! __zfs_complete_switch "d,f,n,p,R,r,v"
then
__zfs_complete_multiple_options "$(__zfs_match_multiple_snapshots)" $cur
__zfs_complete_nospace
fi
;;
*)
COMPREPLY=($(compgen -W "$(__zfs_match_explicit_snapshot) $(__zfs_list_datasets)" -- "$cur"))
COMPREPLY=($(compgen -W "$(__zfs_match_snapshot)" -- "$cur"))
;;
esac
if type __ltrim_colon_completions &> /dev/null
then
__ltrim_colon_completions "$cur"
fi
return 0
}
@ -367,6 +456,7 @@ __zpool_complete()
;;
set)
__zfs_complete_ordered_arguments "$(__zpool_get_editable_properties)" "$(__zpool_list_pools)" $cur
__zfs_complete_nospace
return 0
;;
add|attach|clear|create|detach|offline|online|remove|replace)